diff --git a/nut2.py b/nut2.py
index 99ea8a0..c3f0adc 100644
--- a/nut2.py
+++ b/nut2.py
@@ -22,7 +22,7 @@
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-import telnetlib
+import telnetlib3
 import logging
 
 
@@ -75,7 +75,7 @@ def __del__(self):
             try:
                 self._srv_handler.write(b"LOGOUT\n")
                 self._srv_handler.close()
-            except (telnetlib.socket.error, AttributeError):
+            except (telnetlib3.socket.error, AttributeError):
                 # The socket is already disconnected.
                 pass
 
@@ -94,7 +94,7 @@ def _connect(self):
         logging.debug("Connecting to host")
 
         try:
-            self._srv_handler = telnetlib.Telnet(self._host, self._port,
+            self._srv_handler = telnetlib3.Telnet(self._host, self._port,
                                                  timeout=self._timeout)
 
             if self._login is not None:
@@ -108,7 +108,7 @@ def _connect(self):
                 result = self._srv_handler.read_until(b"\n", self._timeout).decode('utf-8')
                 if not result == "OK\n":
                     raise PyNUTError(result.replace("\n", ""))
-        except telnetlib.socket.error:
+        except telnetlib3.socket.error:
             raise PyNUTError("Socket error.")
 
     def description(self, ups):